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TNPSC Chemistry Online Mock Test Questions

General Science
1. The concept of elliptical orbitals was suggested by
 
  • A. Neil Bohr
  • B. Thomson
  • C. Sommerfeld
  • D. Rutherford
Answer: C.
Sommerfeld
 
2. Which of the following elements behave chemically both as metal and non–metal?
 
  • A. Argon
  • B. Carbon
  • C. Xenon
  • D. Boron
Answer: D.
Boron
 
 
3. Chemical equilibrium is noted in the reaction
 
  • A. Reversible
  • B. Irreversible
  • C. Nuclear
  • D. Photochemical
Answer: A.
Reversible
 
4. The chemical used in match industry is
 
  • A. White phosphorous
  • B. Red phosphorous
  • C. Coke
  • D. Bone ash
Answer: B.
Red phosphorous